So after reading all the different posts about range problems or how to improve range, I was looking into the possibility of purchasing the Inspire RC and linking it with my P4 as it is reported to have more power. I was also told to get the GL658C model as opposed to the GL658A and GL658B. So I emailed DJI and wanted to confirm which model # I would receive if I ordered the RC from their online store. Their reply was "As far as we know there is only one model number for the RC". Really? I then asked even though I already knew the answer, "Can you pair the Inspire RC to the P4?". Their response "It is not recommended". I later called the tech support and got completely different responses. I find that interesting and very disappointing.